Vespel SP3 - Of course, working in vacuum and dry environments has its own challenges. Aerospace engineers have to worry about extra difficulties like outgassing. But SP-3 has proven high performance in aerospace applications, largely due to its ultra-low outgassing.

Excellent performance in vaccuum and dry environment applications including:

Bushings
Bearings
Piston Rings
Seals
Gears

Benefits

Maximum wear and friction resistance in vaccums and other dry environments
Ultra-low outgrassing
High performance in aerospace applications